I think it's best if you attach it to the thread about dutch translation in the issue tracker. So that discussions are held here, but actual improvements are still in the tracker. Thatway it's easier to keep track of what has been done, and when.

Take a look here http://code.google.com/p/corsix-th/wiki/LocalizationThere are people working on this according to the wiki, but maybe there have been changes/additions since then. And as they say, many hands make light work, so dive in there if you want to help.There are instructions on how to proceed, see how you go and submit a patch.